Oil and like extractor



KA F. WILHELM.

0H. AND

ArPLscATloN HLED Nov1 1913.

LIKE EXTRACTORi Patented June 6, l922.

mimos,

UNITED STATES KARL FRIEDRICH WILHELM, 0F STRALSUND, GERMANY.

on. AND LIKE Exmc'roa.

Specification of Letters Patent.

Patented June 6, 1922.

Application tiled November 11, 1913. Serial No. 800,352.

(GRANTED UNDER. THE PROVISIONS 0F THE ACT 0F MARCH-3, 1921, 41 STAT. L., .1313.)v

To all whom z't may concern:

Be it known that I, KARL FRIEDRICH IVILHELM, a subject of the Em eror of Germany, residing atv Stralsund, have invented certain Improvements in Oi and like Extractors (for which I have secured patents in Germany,A #D.'R. P. 289,959, filed January 1, 1913; Belgium, #260,930, filed October 8, 1913; France, #457,057, filed April 8, 1913; Norway, #24,937, filed March 17, 1913; and Great Britain, #25,026/1913, filed December 31, 1 913), of which the following is a specification.

The present invention relates to an apparatus for extracting oil and fat from materials of various kinds, and consists in the provision of a hollow double-walled vessel which is rotatably suspended by means of hollow shafts and provided inl its interior with a seriesvof transverse filtering pipes which communicate with one of the iollow shafts so that liquid can be discharged while the vessel is in motion, the pipe serving at the same time the purpose of stirring the contents of the vessel.. A solvent can be introduced through the shaft into the vessel while the latter is in motion, and steam can at the'same time be circulated through the space between the walls. Owing to .the movement ot' the filtering pipes during the discharge and to the continuous introduction of fresh solvent, the filtering apertures of the pipes are prevented from' being clogged up.

In the accompanying drawings the invention is illustrated,

Fig'. 1 representing a sectional side view of the apparatus, and

Fig. 2, a cross-section of the same.

The. apparatus is composed of a doublewalled hollow cylinder 1 having at each end a hollow shaft 2 by means of which it is rotatably supported in suitable bearings. The hollow shafts serve as means for the introduction into the vessel l' of steam and liquids as well asI for the discharge of the various products. Thus, for instance, steam may be introduced into the s ace between the walls of the cylinder throug the medium of al pipe 13pass1ng through the right shaft,

the condensed water being discharged at 14.

A dissolving agent may be admitted through the left shaft at 15, and liquids may be discharged at 16. A pipe 17, passing through the shaft 2, communicates with a pipe 11 which it holds in an upright position within the vessel for leading ofi' gases and vapours accumulatlng in the upper part of the latter. The vessel 1s provided with manholes 6 which are normally closed in the usual manner.

A row of transverse pipes 3 is fixed up within the vessel 1 as shown in Fig. 3. These pipes are provided with flanges 18 b means of whichl they are secured to the cy lnder wall, and they communicate, through apertures in the wall and through short plpes adjoining the same, with a main pipe 4 carried along the vessel and communicating with one ofthe hollow shafts. pipes 3 are perforated and covered b a filtering layer which may be more or less thick according to the nature of the materials under treatment. The extract-bearing solution is drawn oi' through a pipe 18,.

which'connects the hollow shaft 2 with the interiorof the cylinder. v i lVhile the pipes 3 serve as filters for the extract-bearing liquid and enable the latter to be drawn off in clear condition, theyl also,

in turning with the cylinder 1, tend to disintegrate the materials, 'and to mix them thoroughly w-iththe dissolving agent. ThisA is of great importance particularly in the case ot' materials having a tendency to clod and which, if allowed to do so, cannot be.

properly dried.

I claim: 1. In an apparatus for extracting oil and fat from various materials, the combination with a double-walled hollow c linder which is rotatably supported on hol ow shafts, of transverse filtering pipes detachably arranged within the cylinder, a discharge pipe carried along the outside of the cylinder and AAcommunicating, through apertures made in the cylinder wall, with the filtering 1 es and also with the hollow shaft, so that hqiiid can be discharged during the rotation of the cylinder, means for introducing a solvent into the cylinder through one of the shafts while the cylinder is in motion, and means for simultaneously circulating steamthrough the s ace between the Walls.

2. n an apparatus for extracting oil and fat from varlous materials, the combination with a double-walled hollow cylinder which is rotatably supported on hollow shafts, of transverse filtering pipes detacliably arranged within the cylinder, a discharge pipe y carried along the outside of the cylinder and communicating, throughv apertures made in the cylinder wall, with the filtering pipes and also With the holloul shaft so that liquid can be discharged during the rotation of the cylinder, means for introducing a solvent into the cylinder through one of the hollow shafts, means for simultaneously circulating *i steam through the space between the cylinder walls, and a second discharge pipe connected to the end wall of the cylinder near the circumference and communicating with the cylinder as well as with thel hollow shaft so that liquid can be drawn off from various altitudes withiny the. cylinder according to theposition of the pipe inlet,

substantially as and for the purpose set 20 forth.

KARL FRIEDRICH WILHELM.

Witnesses BRUNO LANDSBERG, EMrL SCHMIDT. 

